ZHCSJK1G November 2002 – May 2019 LM2733
PRODUCTION DATA.
The device options provide for two fixed frequency operating conditions 1.6 MHz, and 600 kHz. Chose the operating frequency required noting the following trade-offs:
Higher switching frequency means the inductors and capacitors can be made smaller and cheaper for a given output voltage and current. The down side is that efficiency is slightly lower because the fixed switching losses occur more frequently and become a larger percentage of total power loss. EMI is typically worse at higher switching frequencies because more EMI energy will be seen in the higher frequency spectrum where most circuits are more sensitive to such interference.